Desktop computer



FIG. 1 is a top front left side perspective view of a desktop computer showing my new design;

FIG. 2 is a front elevation thereof;

FIGS. 3 and 4 are respectively right and left side elevations thereof;

FIG. 5 is a rear elevation thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof. 

The ornamental design for a desktop computer, as shown and described. 